16+8x = 40 4x-3×9 = 29 5X=2.2 3x+6 = 18 2x-7.5 = 8.5
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16+8x = 40 4x-3×9 = 29 5X=2.2 3x+6 = 18 2x-7.5 = 8.5
16+8x = 40
8x=40-16
8x=24
x=3
4x-3×9 = 29
4x-27=29
4x=29+27
4x=56
x=14
5X=2.2
x=2.2÷5
x=0.44
3x+6 = 18
3x=18-6
3x=12
x=4
2x-7.5 = 8.5
2x=8.5+7.5
2x=16
x=8
8x=40-16
8x=24
x=3
4x-3×9 = 29
4x-27=29
4x=29+27
4x=56
x=14
5X=2.2
x=2.2÷5
x=0.44
3x+6 = 18
3x=18-6
3x=12
x=4
2x-7.5 = 8.5
2x=8.5+7.5
2x=16
x=8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
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设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
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16+8x = 40 4x-3×9 = 29 5X=2.2 3x+6 = 18 2x-7.5 = 8.5
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a*b=2×a+b 计算x*2x*3x*4x*5x*6x*7x*8x*9x=3039 x=
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980
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